Mixing-machine.



' A. J. CROPP.

MIXING MACHINE. APPLICATION FILED AUG. 20, 1910.

Patented May 26, 1914.

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(2 oz w/ne sses A. J. OROPPE MIXING MACHINE.

D AUG.20,191'0.

APPLICATION FILE Patenteoi May 26, 1914.

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MIXING MACHINE.

APPLICATION FILED AUG.20, 1910.

1,997,816; Patented May 26, 1914;.

3 SHEETSSHEET 3.

To 'all whom it may} concern.

U ITE srairns Parana? v OFFICE.

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MmING-MAGHINE.

Be it known that 1, 'ANDREW J. Cnorr, a citizen of the United States, residing-at Chicago, in thefcounty of Cook and State of Illinois, have invented certain new and useful Improvements in Mixing-Machines,

"of which the" following is a specification.

This-invention relates to certain improvements in an apparatus to be used for thoroughly mixing or interminghng 1ngradients of various kinds to be used for different purposes, but more particularly for mixing ingredients or materials employed for the production of concrete for any of the pur oses for which it may be used, and has or its objects to improve the construction of machines of the character above indicated and to embody therein simple, efficient and durable means for performing the operation of mixing and for discharging the mixed materials when desired and in suitable quantities.

It relates generally, to that class of ap} para-tus in which a'rotary drum is adapted to receive the material? to be mixed, .and

which drum is provided {internally with means to agitate and'mix the material, the same being fed into the drum and discharged therefrom at opposite ends. I The apparatus or machine is illustrated in the accompanying drawings, in which- Figure 1, is partly a plan and partly a horizontal sectional view showing the charging portion of therotary drum in elevation and the dischargingportion in sec-- tion, bntillustrating'" the discharging cylinder 1n elevation; Fig. 2, is a view 1n eleyation of the discharging end of the inachine; Fig. 3, is a detached View inclevation of the discharging cylinder showing the worm conveyor therein; Fig. 4, is a perspective View ofthe' discharging cylinder showing a portion of the means for guiding the material thereinto, as well as the means for openingand closing'the entrance opening for the material; Fig. 5, is a View in eievation of the charging end of the machine; Fig. 6, 1s a horizontal sect onal view of aj'portion of fli'e'f drum showing the construction of the chafging pocket's thereof;

ceive the discharging "cylinder 26, which extends inwardly from the head 25, to a""point .near the. middle of the drum and has its other end extended a suitable distance out v Wardly from said head. This cylinder may Fig. 7, 15 a-detached sidefview of one of the deflectorsforiiring a part-of the cha rgoclrets f' Fi'g.l B,-'is a perspectlve; View Specification of Letters Patent.-

n y Patented May 26, 1914. Application filed August 20, 1910. Serial No. 578,118.

end view in elevation of a portion of the discharging end of the' cylinder,- showing a modlfication in the construction of the means for opening and'closing the receiving open ng in the discharging cylinder and for guiding the material thereinto; and 11,

IS a fraginental perspective view of like parts.

Like numerals ofreference, refer to corresponding parts' throughout the different views of the drawings;

Referring now to Figs. 1, .2, and 5, of

the drawings, the reference, numeral 12, desagnates asupporting frame of the machine,

which may be of any preferred construction, but preferably has on each. of its,

sides at the front end of the mixing receptacle, an upright 13, which are joined together near their upper ends by means of a cross-piece 14, which is provided at its middle portion with a journal box for one end'ofthe worm-shaft 16, which has a pulley 17, mounted on its front-portion, towhich power maybe applied for driving the same. Journaled on the lower portion of the supporting frame 12, is a driving shaft 18, for .the drum or mixing recep-' tacle, whichshaft may be' driven by any suitable means and has mounted. thereon, gears 19, near its front and rear ends.

The mixing receptacle is designated by the reference numeral 20, and is in the form of a drum or. cylinder, and may be made of any suitable size, form and material. Circumferentially mounted on its outer surface near each of its ends, is a band or circular gear 21, which'mesh with the gears 19, .on the driving shaft. Each of the gears 21, is provided with a circular or band like portion 22, to rest on rollers 23, journaled on the upper portion of the supporting-frame and in pairs on each side-of the drum or mixing receptacle. This drum has at its receiving or charging end a flange 2%, extending inwardly there'- from and at its other end a head 25, which is provided with "a central opening to rebe secured in position by means-of brackets charging cylinder 26, is provided with an entrance opening 29, in its periphery for the admission of the material, which opening may be closed by means of a slidin door 30, movably held in place by means 0 guide pieces 31, and 39-, secured longitudinally on the cylinder 'on each side of the opening therein. The door 30, is provided with an outwardly extended handle 33,-by means of which it can be slid back and forth so as to open and close the entrance openin .29, of the cylinder. Extended from the cicat or guide piece 32, to which it is secured to the inner periphery of the drum, is a, scoop-plate 34-, used for scooping the material to the entrance opening 29, of the discharging cylinder. This scoopeplate is preferably curved as shown by dotted lines in Fig. 2, and is extended longitudinally within the drum 20, from the head 25, thereof, to near the inner end ofthe cylinder. The outer end of the cylinder 26, is provided w ith a diametrically disposed bracket35, in which one end of the shaft 16, is journaled, which shaft. is provided with a worm 36, of the ordinary construction which is located within the discharging cylinder for the purpose of forcing the mixed material therefrom. Extended diagonally and partially across the inner surface of the drum, and secured .edgewise thereto, is a plate 3?,which as-fshown in Figs. 1, and 2, projects inwardly from the drum and extends from theinner edge of the plate 34, diagonally to near the inner end of oneiof the deflectors 38, on the inner surface of the drum at the charging end thereof.

As shown in Figs. 1, 5, 08, inclusive. the drum 20, has secured thereto, near the flange 24, a series of deflectors 38, which are on tended diagonally from points at suitable distances apart inwardly frointhe flange and may have their outer ends secured thereto by any suitablenieans. These deflectors or plates as shown in Figs. 6, and 7, are spaced apart, and have substantially the same diagonal inclination toward the interior of the drum and have their outer poutions reduced, while their inner portions are widened. Each of the deflectors 38, has its edge adjacent. to the axis of the drum cut, to ""orin a recess 39, and. a strap 4:0, and a. circular brake or retarding disk 41, rests against the walls of the recesses 39, and is secured to the deflectors 38, by means of the straps 40, thus connecting the blade or dcfiectors together between their ends and pro viding a brake, or means toprevent the material crowding back into circularly arranged pockets or chutes formed by the blades or deflectors or in other words, having a tendency to cause the material to ad- Vance into the drum.

In Fig, 9, of the drawings; is shown a modification in the construction of the defiectors, which consists of two plates 42, and 13, the former of which may be secured to the inner surface of the drum by means of brackets 44, or otherwise, and at its outer end to the inner surface of the flange 24, while the other plate 43, may be supported inwardly of, or toward the axis of thedrum from the plate 42, on suitable supports 45,

which may have one of their ends secured to the inner surface of the drum, and their other ends connected to 'said plate. By this arrangement, the two said plates forming one of the deflectors, may be arranged out of a line axially with one another. that is to say, the lower plate 42, may be fixed slightly in front of the upper plate 43, or vice versa, or if desired, they may. be arranged in axial alinement. \Vhen this modified form of the deflectors is employed, it will be understood thatthey will be located diagonally within the charging end of'the drum and will form the charging pockets or chutes thereof.

in Figs. 10, and 11, of the drawings, is

shown a modification in the construction of the means employed for opening and closing the entrance openin to the discharging cylinder, as'well as modified means for guiding 0 the material into said opening, which 'con sists in employing a'scoop' plate 3?, which extends from the inner periphery of the drum inwardly on acurved line toward the opening 29, in the discharging cylinder '26, 5 but terminating at a point as at 57, some distance from said cylinder instead of using the scoop=plate 3-1, above described, which extends to the cylinder .26, and secured to the guide-piece 32. In this modified construc tion the scoop-plate 34;, iseext-ended longitudinally within the drum 20, from the head 25, thereof to near the inner end of the cylinder 26, .and is provided at its inner edge with an inwardlyextending flange 58, to prevent the material falling off the inner edge of the plate 34, and to form a better chute or guide for the material to the opening 29, in the discharging cylinder. The lower end of the flange 58, rests on the cyl- 12d inder 26, near the inner end of the opening 29, therein and may be secured thereto if desired. Journaled at its outer end in a suitable bearing in the head 25, is a shaft 59, which is disposed in parallelism along one side-of the opening 29, of the discharging cylinder and may have its inner portion suitably journaled or supported. Mounted on the shaft 59, between the flange 58, and the inner surface of the head 25, is a curved 13o oans re door60, which extends from the lower portion" 57, of the scoop-plate 34 when said door is in its raised position as shown in Fig. 11, of the drawings. Secured on the outer end of the shaft 59, is a lever 61, which has journaled thereon a roller 62, to co-act with a bow-spring 63, which is fastened at one of its ends to a bolt 64, on the plate 25, and has its other end resting on a bolt 66, on sa d plate. i

From the foregoing, and by reference to the drawings, it will be understood that the material to be mixed such as sand, gravel, crushed stone, and cement, may be dumped into the drum over the inner edge of the flange 2i, from wheel barrows, trundled along the supporting frame or otherwise, thus falling into the pockets or chutes formed by the deflectors, when by the rotation of the drum, the material will be directed diagonally toward the middle of the drum and conducted or guided by means of the plate 37 toward the scoop 34, which will carry up a quantity of said material as said scoop is raised in the rotation of the drum, and when the door 30, of the discharging cylinder is opened, will guide the material tl'irough the opening 29, of the cylinder 26, into the same, from which it will be discharged by means of the worm 36, which is preferably rotated in the opposite direction from that of the drum. il' hen it is desired to prevent the discharge of material, it is apparent that the sliding door. '30, may be moved outwardly by means or" the handle 33, so as to close the entrance opening 29,0f the discharging cylinder. In order to preventthe material falling off the inner edge of the scoop 34, and'to form a better chute or guide for the material, to-the opening 29, in the discharging cylinder, said plate is provided with a flange 56, which projects forwardly therefrom.

By the arrangement and construction of the parts shown in Figs. 10, and 11, and above described, it is apparent that when the parts are in thepositions shown by continuous lines in Fig. 11, of the drawings, the door 60, being opened, will rest at its upper portion against the lower portion of the scoop-plate 3%, thus forming a con-- tinuous chute for the passage of thematerial as it is scooped up by the plate 34:, into the cylinder 26, from which it will be discharged by means of the worm 36, as in the other construction. lVhen it is desired to close the opening 29, the lever 61, maybe moved from the position shown by continuous lines in Fig. 10, to that shown by dotted lines in said figure. in which. operation it is apparent that the door 60, will be closed over the opening 29, and held in its closed position by reason of the action of the spring 63, which being curved, will have a tendency to cause the roller 62, on

the lever 61, to move toward the upper porings.

Having thus fully described my invention what'I claim as new and desire'to secure by Letters-Patent is l. The rotary mixing receptacle, means therein to mix the material, a discharge cylinder in the discharging end of the recep-- tacle and rotating therewith and having an opening in its periphery, means to open and close said opening, means carried by the receptacle and cylinder to direct material into the opening of the latter, and a worm in said cylinder.

2. The rotary mixing receptacle, means therein to mix the material, adischarge cylinder extended through the discharging end of the receptacle and rotating therewith and into the same and having an opening in the periphery of its inner portion, means car-' ried by the receptacle and cylinder to direct material into the opening of the latter, a doorto open and close said opening, and a worm in the cylinder.

3. The rotary mixing receptacle, means therein to mix the material, a discharge cylinder located in the discharging end of the receptacle and rotating therewitlrand having an opening in its periphery, means to open and close said opening, a worm in said cylinder, adapted to rotate in a reverse direction to that of the cylinder, and a scoop connected to the cylinder near said opening and to the inner ceptacle.

l. The rotary mixing receptacle, means therein to mix the material, a discharge cylinder extended through the discharging end of the receptacle and into the same and having an opening in the periphery of its inner portion, a door to open and close said open ing, a scoop connected to thecylindernear said opening and to the peripheral wall of the receptacle, and a conducting plate c'xtended diagonally from the scoop on the peripheral wall of the receptacle.

peripheral Wall of the re- 5. The rotary niixing receptacle, means therein to mix the material, a discharging cylinder located in'the discharging end of the receptacle and rota-ting therewith and having an opening in its periphery, means to open and close said opening, a reversely rotating worm in said cylinder, and a scoop provided on its inner edge with a forwardly projecting flange and connected to the cylinder near said opening and to the inner peripheral'wall of the receptacle.

6. Therotary mixing receptacle, a discharge cylinder in the'discharging end of the receptacle and rotating therewith and of the machine and extending from the front having an opening in its periphery, means to open and close said opening, and a worm in said cylinder reversely rotating.

7. In a. mixer, in combination, a revoluble drum, means therein to mix the materials, a charging device consisting of an inwardly extending annular flange, and a continuous series of blades located at the charging end flange rearwardly and diagonally for a short distance, said blades running parallel with eachother and being spaced apart and each advancing blade having its rear end extend ing rearwardly and diagonally back of and overlapped bythe front end of the succeeding blade thus forming a channel, said blades forming a succession of charging and retaining means substantially as described.

8. In a mixer, in combination, a revolubledrum, means therein to mix the materials, a charging device consisting of an inwardly extendin annular flange, and a continuous series -0 partitions -"extending from the flange rearwardly and diagonally with re-.

spect to the axis of the drum, said partitions being of a greater height than said 'rearwardly and diagonally with respect to the axis of the drum, each preceding blade at its rear free end portion overlapping the front end portion of the succeeding blade, to form a continuous series of channels, forming a succession of charging and re taining means and a circular member contacting-on the inner or central portion of said blades thus forming an additional retaining means.

10, The rotary mixing receptacle, meanstherein to mix the material, a discharging cylinder located in the 'dlscharging end of the receptacle and rotating therewith and having an opening in its periphery, a scoop connected at one of its ends to the inner periphery of the receptacle and extended to ward the opening in the discharging cylinder but terminating at a distance'therefrom, a worm in said cylinder. a door pivotally mounted Within the receptacle and adapted to open and close the opening in the discharging cylinder and when raised to rest against the lower portion of the scoop, and means to operate said door.

11. The rotary mixing receptacle, means therein to mix the material, a dischar e cylinder located in the discharging end of the receptacle and having an opening in its periphery, a scoop connected at one of its ends to the inner periphery of the receptacle and extended toward the opening in the discharge cylinder, but terminating at a distance therefrom, an inwardly extended flange on the inner edge of the scoop, a worm in said cylinder, a door pivotally mounted within the receptacle and adapted to open and close the opening in the discharge cylinder, and means to operate said door.

12. The rotary mixing receptacle, means therein to mix the material, a discharge cylinder, located in the discharging end of the receptacle and having an opening in its periphery, a worm in said cylinder, a scoop connected at one of its ends to the inner periphery of the receptacle and. extended toward the opening in the discharge cylinder but terminating at a distance therefrom,

a conducting plate extended diagonally from the scoop on the peripheral wall of the receptacle, adoor pivotally mounted within the receptacle and adapted toopen and close the opening in the discharge cylinder, and means to operate said door.

13. The rotary mixing receptacle, means therein to mix the material, a discharge cylinder extended through the discharging end of the receptacle and into the same and having an opening in the periphery of its inner portion, a shaft journaled alongside the opening in said cylinder, a door mounted on said shaft for pivotal movement to open and close the opening in the discharge cylinder, a lever on said shaft, a bow-spring connected at one of its ends to the head of the receptacle and having its other end movably supported, and a roller journaled on said lever to contact with the curved partof the spring. I p

14. The rotary mixing receptacle, means therein to mix the material, a discharge cylinder extended through the discharging end ofthe receptacle and rotating therewith and into the same and having an opening in the periphery of its inner portion, a door pivot ally mounted at one side of said opening and adapted to open and close the same, and a scoop supported at one end on the cylinder near said opening and connected to the peripheral wall of the receptacle.

15. The rotary mixing receptacle, means therein to mix the material, a discharge cylinder extended through the discharging end of the receptacle and rotating therewith and into the same and'having an opening in the periphery or" its inner portion, a door pivotally mounted at one side of said opening and adapted to open and close the same, a scoop extended from the inner periphery of the receptacle and within the path of the door, and a conducting plate-extended diagonally from the scoop on the peripheral Wall of the receptacle.

16. The rotary mixing receptacle; means therein to mix the material, a shaft jourilaled in the receptacle, 2, door mounted on said shaft, a lwer on said shaft-,3,- suitably sugypcrted spr ng h avmg a segmental port! *2. a roller ournaled on the lever to con- With the segmental portion of the spring and adapted to hold the door in its open or 10 closed'positions by means of the curved portion ofthe spring which acts. to force the roller toward its extremity in either di- 

